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The 4th Conference of the Polish Society on Relativity

24–28 Sept 2017
Kazimierz Dolny, Poland
Europe/Warsaw timezone

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Session

Black holes and entropy

26 Sept 2017, 15:50
Kazimierz Dolny, Poland

Kazimierz Dolny, Poland

Dom Pracy Twórczej SDP ul. Małachowskiego 17 24-120 Kazimierz Dolny

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  1. 63. Black hole hair formation in shift-symmetric generalised scalar-tensor gravity
    Robert Benkel (University of Nottingham)
    26/09/2017, 15:50
    Oral presentation (preferred)

    A linear coupling between a scalar field and the Gauss–Bonnet invariant is the only known interaction term between a scalar and the metric that: respects shift symmetry; does not lead to higher order equations; inevitably introduces black hole hair in asymptotically flat, 4-dimensional spacetimes. I will consider a scalar-tensor theory of gravity that includes such a coupling and present...

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  2. 68. Einstein-Weyl spaces and near horizon geometry
    Maciej Dunajski (DAMTP Cambridge)
    26/09/2017, 16:10
    Oral presentation (preferred)

    Abstract

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  3. 42. Non-Schwarzschild black-hole metrics in alternative theories of gravity: analytical approximations
    Roman Konoplya
    26/09/2017, 16:30
    Oral presentation (preferred)

    Higher derivative extensions of Einstein gravity are important within the string theory approach to gravity and as alternative and effective theories of gravity.
    We consider two numerical black-hole solution: by P. Kanti, et. al. in the Einstein-dilaton-Gauss-Bonnet theory [Phys.Rev. D54 (1996) 5049-5058] and
    the one by H. L\"u, A. Perkins, C. Pope, K. Stelle [Phys.Rev.Lett. 114 (2015),...

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  4. 85. Linear perturbations of spherically symmetric black holes in Lovelock theories
    Alexander Zhidenko (Universidade Federal do ABC, Brazil)
    26/09/2017, 16:50
    Oral presentation (preferred)

    We analyze spherically symmetric black holes in the general Lovelock gravity for different asymptotics (flat, dS, AdS). We find numerically the metric coefficients of the physically relevant branch of the solutions and the corresponding effective potentials for the gravitational perturbations. We also perform a comprehensive analysis of the eikonal instabilities of the black holes.

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  5. 84. Kappa-deformation as an ultraviolet cutoff
    Jerzy Kowalski-Glikman (University of Wrocław)
    26/09/2017, 17:10
    Oral presentation (preferred)

    TBA

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